<template>
  <div class="app-container">
    <el-row :gutter="20">
      <el-col
        :span="24"
        :xs="24"
      >
        <!-- 搜索表单 -->
        <el-form
          :model="queryParams"
          ref="queryForm"
          :inline="true"
          label-width="68px"
        >
          <el-form-item
            label="编号"
            prop="productSn"
          >
            <el-input
              v-model="queryParams.productSn"
              placeholder="请输入产品编号"
              clearable
              size="small"
              @keyup.enter.native="handleQuery"
            />
          </el-form-item>
          <el-form-item
            label="名称"
            prop="productName"
          >
            <el-input
              v-model="queryParams.productName"
              placeholder="请输入产品名称"
              clearable
              size="small"
              @keyup.enter.native="handleQuery"
            />
          </el-form-item>
          <el-form-item
            label="类别"
            prop="categoryId"
          >
            <el-select
              v-model="queryParams.categoryId"
              placeholder="请选择"
            >
              <el-option
                v-for="item in categoryOptions"
                :key="item.categoryId"
                :label="item.categoryName"
                :value="item.categoryId"
              />
            </el-select>
          </el-form-item>
          <el-form-item>
            <el-button
              type="primary"
              icon="el-icon-search"
              size="mini"
              @click="handleQuery"
            >搜索</el-button>
            <el-button
              icon="el-icon-refresh"
              size="mini"
              @click="resetQuery"
            >重置</el-button>
          </el-form-item>
        </el-form>

        <!-- 数据操作按钮 -->
        <el-row :gutter="10">
          <el-col :span="1.5">
            <el-button
              v-hasAuthority="['pos:product:add']"
              type="primary"
              icon="el-icon-plus"
              size="small"
              @click="handleAdd"
            >新增</el-button>
          </el-col>
          <el-col :span="1.5">
            <el-button
              v-hasAuthority="['pos:product:edit']"
              type="success"
              icon="el-icon-edit"
              size="small"
              :disabled="single"
              @click="handleUpdate"
            >修改</el-button>
          </el-col>
          <el-col :span="1.5">
            <el-button
              v-hasAuthority="['pos:product:delete']"
              type="danger"
              icon="el-icon-delete"
              size="small"
              :disabled="multiple"
              @click="handleDelete"
            >删除</el-button>
          </el-col>
          <el-col :span="1.5">
            <el-upload
              action="http://localhost:8081/product/excel/upload"
              style="
                display: inline-block;

                margin-left: 10px;
                margin-right: 10px;
              "
              :headers="{
                Authorization: $store.getters.token,
              }"
              :show-file-list="false"
              :on-success="successUpload"
            >
              <el-button
                v-hasAuthority="['pos:product:excel']"
                icon="el-icon-top"
                size="small"
                style="color:white;background-color: #ff9900e2;"
              >
                批量导入
              </el-button>
            </el-upload>
          </el-col>
          <el-col :span="1.5">
            <el-button
              size="small"
              icon="el-icon-bottom"
              style="color:white;background-color: rgba(68, 196, 166, 0.886)"
              @click="exportData"
            >批量导出</el-button>
          </el-col>
        </el-row>

        <!-- 数据展示Table -->
        <el-table
          v-loading="loading"
          :data="dataList"
          @selection-change="handleSelectionChange"
        >
          <el-table-column
            type="selection"
            width="50"
            align="center"
          />
          <el-table-column
            label="ID"
            align="center"
            prop="productId"
            width="55"
          />
          <el-table-column
            label="编号"
            align="center"
            prop="productSn"
          />
          <el-table-column
            label="名称"
            align="center"
            prop="productName"
          />
          <el-table-column
            label="价格"
            align="center"
            prop="price"
          />
          <el-table-column
            label="类别"
            align="center"
            prop="category.categoryName"
          />
          <el-table-column
            label="操作"
            align="center"
            class-name="small-padding fixed-width"
          >
            <template slot-scope="scope">
              <el-button
                v-hasAuthority="['pos:product:edit']"
                size="small"
                type="text"
                icon="el-icon-edit"
                @click="handleUpdate(scope.row)"
              >修改</el-button>
              <el-button
                v-hasAuthority="['pos:product:delete']"
                size="small"
                type="text"
                icon="el-icon-delete"
                @click="handleDelete(scope.row)"
              >删除</el-button>
            </template>
          </el-table-column>
        </el-table>

        <!-- 分页加载 -->
        <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryParams.pageNum"
          :page-sizes="[5, 10, 20, 50]"
          :page-size="queryParams.pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
        >
        </el-pagination>
      </el-col>
    </el-row>

    <!-- 新增/修改对话框 默认不显示 -->
    <el-dialog
      :title="title"
      :visible.sync="open"
      width="500px"
      append-to-body
    >
      <el-form
        ref="form"
        :model="form"
        :rules="rules"
        label-width="80px"
      >
        <el-form-item
          label="编号"
          prop="productSn"
        >
          <el-input
            v-model="form.productSn"
            placeholder="请输入编号"
          />
        </el-form-item>
        <el-form-item
          label="名称"
          prop="productName"
        >
          <el-input
            v-model="form.productName"
            placeholder="请输入名称"
          />
        </el-form-item>
        <el-form-item
          label="价格"
          prop="price"
        >
          <el-input
            v-model="form.price"
            placeholder="价格"
          />
        </el-form-item>
        <el-form-item
          label="类别"
          prop="categoryId"
        >
          <el-select
            v-model="form.categoryId"
            placeholder="请选择"
          >
            <el-option
              v-for="item in categoryOptions"
              :key="item.categoryId"
              :label="item.categoryName"
              :value="item.categoryId"
            />
          </el-select>
        </el-form-item>
      </el-form>
      <div
        slot="footer"
        class="dialog-footer"
      >
        <el-button
          type="primary"
          @click="submitForm"
        >确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
  import {
    listProductByPage,
    delProduct,
    addProduct,
    getProduct,
    updateProduct,
    upload,
  } from "@/api/pos/product";
  import { listAll } from "@/api/pos/category";
  export default {
    name: "Product",
    // 定义属性
    data() {
      return {
        // 选中数组
        ids: [],
        // 非单个禁用
        single: false,
        // 勾选1个或多个
        multiple: true,
        // 遮罩层
        loading: false,
        // 表格数据
        dataList: [],
        // 文件数组
        fileList: [],
        // 总条数
        total: 0,
        // 查询参数
        queryParams: {
          pageNum: 1,
          pageSize: 5,
          productSn: null,
          productName: null,
          categoryId: null,
        },
        // 下拉框选项数据
        categoryOptions: [],
        // 弹出层标题
        title: "",
        // 是否显示弹出层
        open: false,
        // 表单
        form: {},
        // 表单校验
        rules: {
          productSn: [
            { required: true, message: "编号不能为空", trigger: "blur" },
          ],
          productName: [
            { required: true, message: "名称不能为空", trigger: "blur" },
          ],
        },
      };
    },
    // 计算属性，可选
    computed: {},
    // 监控data变化，可选
    watch: {},
    // 生命周期-创建完成，可选
    created() {
      this.getList();
      this.getCategoryOptions();
    },
    // 生命周期-挂载完成，可选
    mounted() {
      this.single = true;
    },

    // 方法集合
    methods: {
      /** 批量导出数据 */
      exportData() {
        if (!this.ids.lengths) {
          window.open("http://localhost:8081/product/export");
        }
      },
      /** 批量上传数据 */
      uploadFile(options) {
        alert(1);
        this.fileList.push(options.file);
      },
      uploadData() {
        console.log(this.fileList);
        let data = new FormData();
        for (let file of this.fileList) {
          console.log(file);
          alert(1);
          data.append(file);
        }

        upload(data).then((response) => {
          this.$message.success(response.msg);
          this.getList();
          this.cancel();
        });
      },

      /** 查看是否成功上传*/
      successUpload(res) {
        console.log(res);
        // this.$message.success(res.msg);
        if (res.code === 200) {
          this.$message.success("批量导入成功");
          this.getList();
        } else {
          this.$message.error(res.msg);
        }
      },
      /** 查询数据列表 */
      getList() {
        this.loading = true;
        // 结果赋值this.dataList
        listProductByPage(this.queryParams).then((response) => {
          this.dataList = response.data.list;
          this.total = response.data.total;
          this.loading = false;
        });
      },
      /** 处理分页 */
      handleSizeChange(val) {
        this.queryParams.pageSize = val;
        this.getList();
      },
      handleCurrentChange(val) {
        this.queryParams.pageNum = val;
        this.getList();
      },
      /** 查询下拉列表选型 */
      getCategoryOptions() {
        // 访问后端接口，查外键所有对象
        // 结果赋值this.categoryOptions
        listAll().then((response) => {
          this.categoryOptions = response.data;
        });
      },

      // 多选框选中数据
      handleSelectionChange(selection) {
        this.ids = selection.map((item) => item.productId);
        this.single = selection.length !== 1;
        this.multiple = !selection.length;
      },
      /** 搜索按钮操作 */
      handleQuery() {
        this.queryParams.pageNum = 1;
        this.getList();
      },

      /** 重置按钮操作 */
      resetQuery() {
        this.$refs.queryForm.resetFields();
        this.getList();
      },
      /** 删除按钮操作 */
      handleDelete(row) {
        const productId = row.productId || this.ids;
        this.$confirm('是否确认删除ID为"' + productId + '"的数据项?', "警告", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        })
          .then(function () {
            return delProduct(productId);
          })
          .then(() => {
            this.getList(); // 刷新数据
            this.$message.success("删除成功");
          })
          .catch(() => { });
      },
      /** 表单初始化 */
      resetForm() {
        // 可进行数据初始化工作
        this.form = {
          productId: null,
          productSn: null,
          productName: null,
          price: null,
          categoryId: null,
        };
      },
      /** 新增按钮操作 */
      handleAdd() {
        this.resetForm();
        this.open = true;
        this.title = "添加数据";
      },
      /** 修改按钮操作 */
      handleUpdate(row) {
        this.resetForm();
        const productId = row.productId || this.ids;
        getProduct(productId).then((response) => {
          this.form = response.data;
          this.open = true;
          this.title = "修改数据";
        });
      },
      /** 提交按钮 */
      submitForm: function () {
        this.$refs["form"].validate((valid) => {
          if (valid) {
            if (this.form.productId != null) {
              updateProduct(this.form).then((response) => {
                this.$message.success(response.msg);
                this.getList();
                this.cancel();
              });
            } else {
              addProduct(this.form).then((response) => {
                this.$message.success(response.msg);
                this.getList();
                this.cancel();
              });
            }
          }
        });
      },
      /** 取消按钮 */
      cancel() {
        this.open = false;
        this.title = "";
        this.resetForm();
      },
    },
  };
</script>

<style
  scoped
  lang="scss"
>
</style>